Start our new editor OrbWin on a Windows computer (or our older editor OrbWeaver on a Windows or DOS computer). Then load your .dig file of coastlines and/or political boundaries in (longitude, latitude) format, by using command LoadBase [OrbWin] or Load grid [OrbWeaver]. Zoom the window until it shows the area you want to model, using command View/ZoomInOut [OrbWin] or Zoom [OrbWeaver]. Then use command Tools/TileRegionGrid [OrbWin] or Tile [OrbWeaver] to create a rough finite element grid of uniform triangles, by outlining the region in the counter-clockwise direction with mouse clicks.
